﻿using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Net;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Text.RegularExpressions;

namespace DotnetSpider.Lawyee.Src
{

	/// <summary>
	/// HttpHelper 的摘要说明
	/// </summary>

	/// <summary>
	/// Http连接操作帮助类
	/// </summary>
	public class HttpHelper
	{

		public Dictionary<string, string> ContentTypeDict =
			 new Dictionary<string, string>
				{
					{ "Form", "application/x-www-form-urlencoded; charset=UTF-8" },
					{ "Json", "application/json;charset=UTF-8" },
					{ "Text", "text/plain;charset=UTF-8" },
				};


		#region 预定义方变量
		//默认的编码
		private Encoding encoding = Encoding.UTF8;
		//Post数据编码
		private Encoding postencoding = Encoding.Default;
		//HttpWebRequest对象用来发起请求
		private HttpWebRequest request = null;
		//获取影响流的数据对象
		private HttpWebResponse response = null;
		//设置本地的出口ip和端口
		private IPEndPoint _IPEndPoint = null;
		#endregion

		#region Public

		/// <summary>
		/// 根据相传入的数据，得到相应页面数据
		/// </summary>
		/// <param name="item">参数类对象</param>
		/// <returns>返回HttpResult类型</returns>
		public HttpResult GetHtml(HttpItem item)
		{
			//返回参数
			HttpResult result = new HttpResult();
			try
			{
				//准备参数
				SetRequest(item);
			}
			catch (Exception ex)
			{
				result.Cookie = string.Empty;
				result.Header = null;
				result.Html = ex.Message;
				result.StatusDescription = "配置参数时出错：" + ex.Message;
				//配置参数时出错
				return result;
			}
			try
			{
				//请求数据
				using (response = (HttpWebResponse)request.GetResponse())
				{
					GetData(item, result);
				}
			}
			catch (WebException ex)
			{
				if (ex.Response != null)
				{
					using (response = (HttpWebResponse)ex.Response)
					{
						GetData(item, result);
					}
				}
				else
				{
					result.Html = ex.Message;
				}
			}
			catch (Exception ex)
			{
				result.Html = ex.Message;
			}
			if (item.IsToLower) result.Html = result.Html.ToLower();
			return result;
		}
		#endregion

		#region GetData

		/// <summary>
		/// 获取数据的并解析的方法
		/// </summary>
		/// <param name="item"></param>
		/// <param name="result"></param>
		private void GetData(HttpItem item, HttpResult result)
		{
			#region base
			//获取StatusCode
			result.StatusCode = response.StatusCode;
			//获取StatusDescription
			result.StatusDescription = response.StatusDescription;
			//获取最后访问的URl
			result.ResponseUri = response.ResponseUri.ToString();
			//获取Headers
			result.Header = response.Headers;


			//获取CookieCollection
			if (response.Cookies != null) result.CookieCollection = response.Cookies;
			//获取set-cookie
			if (response.Headers["set-cookie"] != null) result.Cookie = response.Headers["set-cookie"];

			//CookieContainer
			if (response.Headers["set-cookie"] != null) result.CookieContainer = request.CookieContainer;

			#endregion

			#region byte
			//处理网页Byte
			byte[] ResponseByte = GetByte();
			#endregion

			#region Html
			if (ResponseByte != null && ResponseByte.Length > 0)
			{
				//设置编码
				SetEncoding(item, result, ResponseByte);
				//得到返回的HTML
				result.Html = encoding.GetString(ResponseByte);
			}
			else
			{
				//没有返回任何Html代码
				result.Html = string.Empty;
			}
			#endregion
		}
		/// <summary>
		/// 设置编码
		/// </summary>
		/// <param name="item">HttpItem</param>
		/// <param name="result">HttpResult</param>
		/// <param name="ResponseByte">byte[]</param>
		private void SetEncoding(HttpItem item, HttpResult result, byte[] ResponseByte)
		{
			//是否返回Byte类型数据
			if (item.ResultType == ResultType.Byte) result.ResultByte = ResponseByte;
			//从这里开始我们要无视编码了
			if (encoding == null)
			{
				Match meta = Regex.Match(Encoding.Default.GetString(ResponseByte), "<meta[^<]*charset=([^<]*)[\"']", RegexOptions.IgnoreCase);
				string c = string.Empty;
				if (meta != null && meta.Groups.Count > 0)
				{
					c = meta.Groups[1].Value.ToLower().Trim();
				}
				if (c.Length > 2)
				{
					try
					{
						encoding = Encoding.GetEncoding(c.Replace("\"", string.Empty).Replace("'", "").Replace(";", "").Replace("iso-8859-1", "gbk").Trim());
					}
					catch
					{
						if (string.IsNullOrEmpty(response.CharacterSet))
						{
							encoding = Encoding.UTF8;
						}
						else
						{
							encoding = Encoding.GetEncoding(response.CharacterSet);
						}
					}
				}
				else
				{
					if (string.IsNullOrEmpty(response.CharacterSet))
					{
						encoding = Encoding.UTF8;
					}
					else
					{
						switch (response.CharacterSet)
						{
							case "ISO-8859-1":
								encoding = Encoding.UTF8;
								break;
							default:
								encoding = Encoding.GetEncoding(response.CharacterSet);
								break;
						}

					}
				}
			}
		}
		/// <summary>
		/// 提取网页Byte
		/// </summary>
		/// <returns></returns>
		private byte[] GetByte()
		{
			byte[] ResponseByte = null;
			MemoryStream _stream = new MemoryStream();

			//GZIIP处理
			if (response.ContentEncoding != null && response.ContentEncoding.Equals("gzip", StringComparison.InvariantCultureIgnoreCase))
			{
				//开始读取流并设置编码方式
				//  _stream = GetMemoryStream(new GZipStream(response.GetResponseStream(), CompressionMode.Decompress));

				_stream = DecompressGZip(response);

			}
			else
			{
				//开始读取流并设置编码方式
				_stream = GetMemoryStream(response.GetResponseStream());
			}

			/*
            Stream stream = response.GetResponseStream();

            WebHeaderCollection cc = response.Headers;

            if (response.Headers["Content-Encoding"] != null
                     && response.Headers["Content-Encoding"].ToLower().Contains("gzip"))
            {
                //开始读取流并设置编码方式
                _stream = GetMemoryStream(new GZipStream(stream, CompressionMode.Decompress));
            }
            else if (response.Headers["Content-Encoding"] != null
               && response.Headers["Content-Encoding"].ToLower().Contains("deflate"))
            {
                //开始读取流并设置编码方式
                _stream = GetMemoryStream(new DeflateStream(stream, CompressionMode.Decompress));
            }
            else {

                _stream = GetMemoryStream(stream);
            }
             * 
             * */



			//获取Byte
			ResponseByte = _stream.ToArray();
			_stream.Close();
			return ResponseByte;
		}

		/// <summary>
		/// 4.0以下.net版本取数据使用
		/// </summary>
		/// <param name="streamResponse">流</param>
		private MemoryStream GetMemoryStream(Stream streamResponse)
		{
			MemoryStream _stream = new MemoryStream();
			int Length = 256;
			Byte[] buffer = new Byte[Length];
			int bytesRead = streamResponse.Read(buffer, 0, Length);
			while (bytesRead > 0)
			{
				_stream.Write(buffer, 0, bytesRead);
				bytesRead = streamResponse.Read(buffer, 0, Length);
			}
			return _stream;
		}


		public MemoryStream DecompressGZip(HttpWebResponse res)
		{

			Stream stream = new GZipStream(res.GetResponseStream(), CompressionMode.Decompress);
			int length = 0;
			if (res.ContentLength > 0)
			{
				length = (int)res.ContentLength;
			}
			else
			{
				length = 3000;
			}
			MemoryStream memory = new MemoryStream(length);
			int count = 0;
			//每次从服务器返回流中读取5000个字节
			byte[] buffer = new byte[5000];
			while (true)
			{

				//如果服务器使用了Transfer-Encoding：chunked缓冲输出，则如果已经读取了服务器第一次Flush的内容后服务器第二次Flush的内容还没有接收到，则会阻塞当前线程，
				//直到接收到服务器第二次Flush的内容（第三，四。。。次Flush也是一样），所以很可能会造成读取一次返回的count不满5000，但下一次继续读取返回的count却不是0的情况

				count = stream.Read(buffer, 0, buffer.Length);
				if (count == 0)
				{
					break;
				}
				memory.Write(buffer, 0, count);
			}

			stream.Close();
			//将流的可读位置设置到起始值
			memory.Seek(0, SeekOrigin.Begin);
			return memory;
		}


		#endregion

		#region SetRequest

		/// <summary>
		/// 为请求准备参数
		/// </summary>
		///<param name="item">参数列表</param>
		private void SetRequest(HttpItem item)
		{
			// 验证证书
			SetCer(item);
			if (item.IPEndPoint != null)
			{
				_IPEndPoint = item.IPEndPoint;
				//设置本地的出口ip和端口
				request.ServicePoint.BindIPEndPointDelegate = new BindIPEndPoint(BindIPEndPointCallback);
			}
			//设置Header参数
			if (item.Header != null && item.Header.Count > 0) foreach (string key in item.Header.AllKeys)
				{
					request.Headers.Add(key, item.Header[key]);
				}
			// 设置代理
			SetProxy(item);
			if (item.ProtocolVersion != null) request.ProtocolVersion = item.ProtocolVersion;
			request.ServicePoint.Expect100Continue = item.Expect100Continue;
			if (!string.IsNullOrEmpty(item.IndicateHost))
			{
				request.Host = item.IndicateHost;   //连接CDN请求Url
			}

			//请求方式Get或者Post
			request.Method = item.Method;
			request.Timeout = item.Timeout;
			request.KeepAlive = item.KeepAlive;
			request.ReadWriteTimeout = item.ReadWriteTimeout;
			if (item.IfModifiedSince != null) request.IfModifiedSince = Convert.ToDateTime(item.IfModifiedSince);
			//Accept
			request.Accept = item.Accept;

			//ContentType返回类型

			if (!string.IsNullOrEmpty(item.ContentType))
			{
				request.ContentType = item.ContentType;
			}


			//UserAgent客户端的访问类型，包括浏览器版本和操作系统信息
			request.UserAgent = item.UserAgent;
			// 编码
			encoding = item.Encoding;
			//设置安全凭证
			request.Credentials = item.ICredentials;
			//设置Cookie
			SetCookie(item);
			//来源地址
			request.Referer = item.Referer;
			//是否执行跳转功能
			request.AllowAutoRedirect = item.Allowautoredirect;
			if (item.MaximumAutomaticRedirections > 0)
			{
				request.MaximumAutomaticRedirections = item.MaximumAutomaticRedirections;
			}


			//设置Post数据
			SetPostData(item);
			//设置最大连接
			if (item.Connectionlimit > 0) request.ServicePoint.ConnectionLimit = item.Connectionlimit;
		}
		/// <summary>
		/// 设置证书
		/// </summary>
		/// <param name="item"></param>
		private void SetCer(HttpItem item)
		{
			if (!string.IsNullOrEmpty(item.CerPath))
			{
				//这一句一定要写在创建连接的前面。使用回调的方法进行证书验证。
				ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(CheckValidationResult);
				//初始化对像，并设置请求的URL地址
				request = (HttpWebRequest)WebRequest.Create(item.URL);
				SetCerList(item);
				//将证书添加到请求里
				request.ClientCertificates.Add(new X509Certificate(item.CerPath));
			}
			else if (item.URL.StartsWith("https", StringComparison.OrdinalIgnoreCase))
			{

				ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
				request = WebRequest.Create(item.URL) as HttpWebRequest;
				//request.ProtocolVersion = HttpVersion.Version10;

				request.ProtocolVersion = HttpVersion.Version11;
			}
			else
			{
				//初始化对像，并设置请求的URL地址
				// request = (HttpWebRequest)WebRequest.Create(item.URL);
				request = WebRequest.Create(item.URL) as HttpWebRequest;

				SetCerList(item);
			}
		}
		/// <summary>
		/// 设置多个证书
		/// </summary>
		/// <param name="item"></param>
		private void SetCerList(HttpItem item)
		{
			if (item.ClentCertificates != null && item.ClentCertificates.Count > 0)
			{
				foreach (X509Certificate c in item.ClentCertificates)
				{
					request.ClientCertificates.Add(c);
				}
			}
		}
		/// <summary>
		/// 设置Cookie
		/// </summary>
		/// <param name="item">Http参数</param>
		private void SetCookie(HttpItem item)
		{
			if (!string.IsNullOrEmpty(item.Cookie))
			{
				request.Headers[HttpRequestHeader.Cookie] = item.Cookie;

			}
			else
			{
				//设置CookieCollection


				if (item.CookieContainer != null)
				{
					if (item.ResultCookieType == ResultCookieType.CookieCollection)
					{
						request.CookieContainer = new CookieContainer();
						if (item.CookieCollection != null && item.CookieCollection.Count > 0)
							request.CookieContainer.Add(item.CookieCollection);

					}
					else

						request.CookieContainer = item.CookieContainer;

				}
				else

					request.CookieContainer = new CookieContainer();
			}
		}
		/// <summary>
		/// 设置Post数据
		/// </summary>
		/// <param name="item">Http参数</param>
		private void SetPostData(HttpItem item)
		{
			//验证在得到结果时是否有传入数据
			if (!request.Method.Trim().ToLower().Contains("get"))
			{
				if (item.PostEncoding != null)
				{
					postencoding = item.PostEncoding;
				}
				byte[] buffer = null;
				//写入Byte类型
				if (item.PostDataType == PostDataType.Byte && item.PostdataByte != null && item.PostdataByte.Length > 0)
				{
					//验证在得到结果时是否有传入数据
					buffer = item.PostdataByte;
				}//写入文件
				else if (item.PostDataType == PostDataType.FilePath && !string.IsNullOrEmpty(item.Postdata))
				{
					StreamReader r = new StreamReader(item.Postdata, postencoding);
					buffer = postencoding.GetBytes(r.ReadToEnd());
					r.Close();
				} //写入字符串
				else if (!string.IsNullOrEmpty(item.Postdata))
				{
					buffer = postencoding.GetBytes(item.Postdata);
				}
				if (buffer != null)
				{
					request.ContentLength = buffer.Length;
					request.GetRequestStream().Write(buffer, 0, buffer.Length);
				}
				else
				{
					request.ContentLength = 0;
				}
			}
		}
		/// <summary>
		/// 设置代理
		/// </summary>
		/// <param name="item">参数对象</param>
		private void SetProxy(HttpItem item)
		{
			bool isIeProxy = false;
			if (!string.IsNullOrEmpty(item.ProxyIp))
			{
				isIeProxy = item.ProxyIp.ToLower().Contains("ieproxy");
			}
			if (!string.IsNullOrEmpty(item.ProxyIp) && !isIeProxy)
			{
				//设置代理服务器
				if (item.ProxyIp.Contains(":"))
				{
					string[] plist = item.ProxyIp.Split(':');
					WebProxy myProxy = new WebProxy(plist[0].Trim(), Convert.ToInt32(plist[1].Trim()));
					//建议连接
					myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd);
					//给当前请求对象
					request.Proxy = myProxy;
				}
				else
				{
					WebProxy myProxy = new WebProxy(item.ProxyIp, false);
					//建议连接
					myProxy.Credentials = new NetworkCredential(item.ProxyUserName, item.ProxyPwd);
					//给当前请求对象
					request.Proxy = myProxy;
				}
			}
			else if (isIeProxy)
			{
				//设置为IE代理
			}
			else
			{
				request.Proxy = item.WebProxy;

				//request.Proxy = new WebProxy("127.0.0.1",8889);
			}
		}
		#endregion

		#region private main
		/// <summary>
		/// 回调验证证书问题
		/// </summary>
		/// <param name="sender">流对象</param>
		/// <param name="certificate">证书</param>
		/// <param name="chain">X509Chain</param>
		/// <param name="errors">SslPolicyErrors</param>
		/// <returns>bool</returns>
		private bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) { return true; }

		/// <summary>
		/// 通过设置这个属性，可以在发出连接的时候绑定客户端发出连接所使用的IP地址。 
		/// </summary>
		/// <param name="servicePoint"></param>
		/// <param name="remoteEndPoint"></param>
		/// <param name="retryCount"></param>
		/// <returns></returns>
		private IPEndPoint BindIPEndPointCallback(ServicePoint servicePoint, IPEndPoint remoteEndPoint, int retryCount)
		{
			return _IPEndPoint;//端口号
		}
		#endregion
	}
	/// <summary>
	/// Http请求参考类
	/// </summary>
	public class HttpItem
	{
		string _URL = string.Empty;
		/// <summary>
		/// 请求URL必须填写
		/// </summary>
		public string URL
		{
			get { return _URL; }
			set { _URL = value; }
		}
		string _Method = "GET";
		/// <summary>
		/// 请求方式默认为GET方式,当为POST方式时必须设置Postdata的值
		/// </summary>
		public string Method
		{
			get { return _Method; }
			set { _Method = value; }
		}

		/// <summary>
		/// 指定CDN请求Host
		/// </summary>
		public string IndicateHost { get; set; }

		int _Timeout = 100000;
		/// <summary>
		/// 默认请求超时时间
		/// </summary>
		public int Timeout
		{
			get { return _Timeout; }
			set { _Timeout = value; }
		}
		int _ReadWriteTimeout = 30000;
		/// <summary>
		/// 默认写入Post数据超时间
		/// </summary>
		public int ReadWriteTimeout
		{
			get { return _ReadWriteTimeout; }
			set { _ReadWriteTimeout = value; }
		}
		Boolean _KeepAlive = true;
		/// <summary>
		///  获取或设置一个值，该值指示是否与 Internet 资源建立持久性连接默认为true。
		/// </summary>
		public Boolean KeepAlive
		{
			get { return _KeepAlive; }
			set { _KeepAlive = value; }
		}
		string _Accept = "text/html, application/xhtml+xml, */*";
		/// <summary>
		/// 请求标头值 默认为text/html, application/xhtml+xml, */*
		/// </summary>
		public string Accept
		{
			get { return _Accept; }
			set { _Accept = value; }
		}

		string _ContentType = "text/html";
		/// <summary>
		/// 请求返回类型默认 text/html
		/// </summary>
		public string ContentType
		{
			get { return _ContentType; }
			set { _ContentType = value; }
		}
		string _UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36";
		/// <summary>
		/// 客户端访问信息默认Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)
		/// </summary>
		public string UserAgent
		{
			get { return _UserAgent; }
			set { _UserAgent = value; }
		}
		Encoding _Encoding = null;
		/// <summary>
		/// 返回数据编码默认为NUll,可以自动识别,一般为utf-8,gbk,gb2312
		/// </summary>
		public Encoding Encoding
		{
			get { return _Encoding; }
			set { _Encoding = value; }
		}
		private PostDataType _PostDataType = PostDataType.String;
		/// <summary>
		/// Post的数据类型
		/// </summary>
		public PostDataType PostDataType
		{
			get { return _PostDataType; }
			set { _PostDataType = value; }
		}
		string _Postdata = string.Empty;
		/// <summary>
		/// Post请求时要发送的字符串Post数据
		/// </summary>
		public string Postdata
		{
			get { return _Postdata; }
			set { _Postdata = value; }
		}
		private byte[] _PostdataByte = null;
		/// <summary>
		/// Post请求时要发送的Byte类型的Post数据
		/// </summary>
		public byte[] PostdataByte
		{
			get { return _PostdataByte; }
			set { _PostdataByte = value; }
		}
		private WebProxy _WebProxy;
		/// <summary>
		/// 设置代理对象，不想使用IE默认配置就设置为Null，而且不要设置ProxyIp
		/// </summary>
		public WebProxy WebProxy
		{
			get { return _WebProxy; }
			set { _WebProxy = value; }
		}

		/// <summary>
		/// CookieContainer对象
		/// </summary>
		CookieContainer cookieContainer = null;
		public CookieContainer CookieContainer
		{
			get { return cookieContainer; }
			set { cookieContainer = value; }
		}


		CookieCollection cookiecollection = null;

		/// <summary>
		/// Cookie对象集合
		/// </summary>
		public CookieCollection CookieCollection
		{
			get { return cookiecollection; }
			set { cookiecollection = value; }
		}
		string _Cookie = string.Empty;
		/// <summary>
		/// 请求时的Cookie
		/// </summary>
		public string Cookie
		{
			get { return _Cookie; }
			set { _Cookie = value; }
		}
		string _Referer = string.Empty;
		/// <summary>
		/// 来源地址，上次访问地址
		/// </summary>
		public string Referer
		{
			get { return _Referer; }
			set { _Referer = value; }
		}
		string _CerPath = string.Empty;
		/// <summary>
		/// 证书绝对路径
		/// </summary>
		public string CerPath
		{
			get { return _CerPath; }
			set { _CerPath = value; }
		}
		private Boolean isToLower = false;
		/// <summary>
		/// 是否设置为全文小写，默认为不转化
		/// </summary>
		public Boolean IsToLower
		{
			get { return isToLower; }
			set { isToLower = value; }
		}
		private Boolean allowautoredirect = false;
		/// <summary>
		/// 支持跳转页面，查询结果将是跳转后的页面，默认是不跳转
		/// </summary>
		public Boolean Allowautoredirect
		{
			get { return allowautoredirect; }
			set { allowautoredirect = value; }
		}
		private int connectionlimit = 1024;
		/// <summary>
		/// 最大连接数
		/// </summary>
		public int Connectionlimit
		{
			get { return connectionlimit; }
			set { connectionlimit = value; }
		}
		private string proxyusername = string.Empty;
		/// <summary>
		/// 代理Proxy 服务器用户名
		/// </summary>
		public string ProxyUserName
		{
			get { return proxyusername; }
			set { proxyusername = value; }
		}
		private string proxypwd = string.Empty;
		/// <summary>
		/// 代理 服务器密码
		/// </summary>
		public string ProxyPwd
		{
			get { return proxypwd; }
			set { proxypwd = value; }
		}
		private string proxyip = string.Empty;
		/// <summary>
		/// 代理 服务IP ,如果要使用IE代理就设置为ieproxy
		/// </summary>
		public string ProxyIp
		{
			get { return proxyip; }
			set { proxyip = value; }
		}
		private ResultType resulttype = ResultType.String;
		/// <summary>
		/// 设置返回类型String和Byte
		/// </summary>
		public ResultType ResultType
		{
			get { return resulttype; }
			set { resulttype = value; }
		}
		private WebHeaderCollection header = new WebHeaderCollection();
		/// <summary>
		/// header对象
		/// </summary>
		public WebHeaderCollection Header
		{
			get { return header; }
			set { header = value; }
		}

		private Version _ProtocolVersion;

		/// <summary>
		//     获取或设置用于请求的 HTTP 版本。返回结果:用于请求的 HTTP 版本。默认为 System.Net.HttpVersion.Version11。
		/// </summary>
		public Version ProtocolVersion
		{
			get { return _ProtocolVersion; }
			set { _ProtocolVersion = value; }
		}
		private Boolean _expect100continue = false;
		/// <summary>
		///  获取或设置一个 System.Boolean 值，该值确定是否使用 100-Continue 行为。如果 POST 请求需要 100-Continue 响应，则为 true；否则为 false。默认值为 true。
		/// </summary>
		public Boolean Expect100Continue
		{
			get { return _expect100continue; }
			set { _expect100continue = value; }
		}
		private X509CertificateCollection _ClentCertificates;
		/// <summary>
		/// 设置509证书集合
		/// </summary>
		public X509CertificateCollection ClentCertificates
		{
			get { return _ClentCertificates; }
			set { _ClentCertificates = value; }
		}
		private Encoding _PostEncoding;
		/// <summary>
		/// 设置或获取Post参数编码,默认的为Default编码
		/// </summary>
		public Encoding PostEncoding
		{
			get { return _PostEncoding; }
			set { _PostEncoding = value; }
		}
		private ResultCookieType _ResultCookieType = ResultCookieType.String;
		/// <summary>
		/// Cookie返回类型,默认的是只返回字符串类型
		/// </summary>
		public ResultCookieType ResultCookieType
		{
			get { return _ResultCookieType; }
			set { _ResultCookieType = value; }
		}

		private ICredentials _ICredentials = CredentialCache.DefaultCredentials;
		/// <summary>
		/// 获取或设置请求的身份验证信息。
		/// </summary>
		public ICredentials ICredentials
		{
			get { return _ICredentials; }
			set { _ICredentials = value; }
		}
		/// <summary>
		/// 设置请求将跟随的重定向的最大数目
		/// </summary>
		private int _MaximumAutomaticRedirections;

		public int MaximumAutomaticRedirections
		{
			get { return _MaximumAutomaticRedirections; }
			set { _MaximumAutomaticRedirections = value; }
		}

		private DateTime? _IfModifiedSince = null;
		/// <summary>
		/// 获取和设置IfModifiedSince，默认为当前日期和时间
		/// </summary>
		public DateTime? IfModifiedSince
		{
			get { return _IfModifiedSince; }
			set { _IfModifiedSince = value; }
		}
		#region ip-port
		private IPEndPoint _IPEndPoint = null;
		/// <summary>
		/// 设置本地的出口ip和端口
		/// </summary>]
		/// <example>
		///item.IPEndPoint = new IPEndPoint(IPAddress.Parse("192.168.1.1"),80);
		/// </example>
		public IPEndPoint IPEndPoint
		{
			get { return _IPEndPoint; }
			set { _IPEndPoint = value; }
		}
		#endregion
	}
	/// <summary>
	/// Http返回参数类
	/// </summary>
	public class HttpResult
	{
		private string _Cookie;
		/// <summary>
		/// Http请求返回的Cookie
		/// </summary>
		public string Cookie
		{
			get { return _Cookie; }
			set { _Cookie = value; }
		}

		/// <summary>
		/// CookieContainer对象
		/// </summary>
		CookieContainer cookieContainer = null;
		public CookieContainer CookieContainer
		{
			get { return cookieContainer; }
			set { cookieContainer = value; }
		}

		private CookieCollection _CookieCollection;
		/// <summary>
		/// Cookie对象集合
		/// </summary>
		public CookieCollection CookieCollection
		{
			get { return _CookieCollection; }
			set { _CookieCollection = value; }
		}
		private string _html = string.Empty;
		/// <summary>
		/// 返回的String类型数据 只有ResultType.String时才返回数据，其它情况为空
		/// </summary>
		public string Html
		{
			get { return _html; }
			set { _html = value; }
		}
		private byte[] _ResultByte;
		/// <summary>
		/// 返回的Byte数组 只有ResultType.Byte时才返回数据，其它情况为空
		/// </summary>
		public byte[] ResultByte
		{
			get { return _ResultByte; }
			set { _ResultByte = value; }
		}
		private WebHeaderCollection _Header;
		/// <summary>
		/// header对象
		/// </summary>
		public WebHeaderCollection Header
		{
			get { return _Header; }
			set { _Header = value; }
		}
		private string _StatusDescription;
		/// <summary>
		/// 返回状态说明
		/// </summary>
		public string StatusDescription
		{
			get { return _StatusDescription; }
			set { _StatusDescription = value; }
		}
		private HttpStatusCode _StatusCode;
		/// <summary>
		/// 返回状态码,默认为OK
		/// </summary>
		public HttpStatusCode StatusCode
		{
			get { return _StatusCode; }
			set { _StatusCode = value; }
		}
		/// <summary>
		/// 最后访问的URl
		/// </summary>
		public string ResponseUri { get; set; }
		/// <summary>
		/// 获取重定向的URl
		/// </summary>
		public string RedirectUrl
		{
			get
			{
				try
				{
					if (Header != null && Header.Count > 0)
					{
						string baseurl = Header["location"].ToString().Trim();
						string locationurl = baseurl.ToLower();
						if (!string.IsNullOrWhiteSpace(locationurl))
						{
							bool b = locationurl.StartsWith("http://") || locationurl.StartsWith("https://");
							if (!b)
							{
								baseurl = new Uri(new Uri(ResponseUri), baseurl).AbsoluteUri;
							}
						}
						return baseurl;
					}
				}
				catch { }
				return string.Empty;
			}

		}
	}
	/// <summary>
	/// 返回类型
	/// </summary>
	public enum ResultType
	{
		/// <summary>
		/// 表示只返回字符串 只有Html有数据
		/// </summary>
		String,
		/// <summary>
		/// 表示返回字符串和字节流 ResultByte和Html都有数据返回
		/// </summary>
		Byte
	}
	/// <summary>
	/// Post的数据格式默认为string
	/// </summary>
	public enum PostDataType
	{
		/// <summary>
		/// 字符串类型，这时编码Encoding可不设置
		/// </summary>
		String,
		/// <summary>
		/// Byte类型，需要设置PostdataByte参数的值编码Encoding可设置为空
		/// </summary>
		Byte,
		/// <summary>
		/// 传文件，Postdata必须设置为文件的绝对路径，必须设置Encoding的值
		/// </summary>
		FilePath
	}
	/// <summary>
	/// Cookie返回类型
	/// </summary>
	public enum ResultCookieType
	{
		/// <summary>
		/// 只返回字符串类型的Cookie
		/// </summary>
		String,
		/// <summary>
		/// CookieCollection格式的Cookie集合同时也返回String类型的cookie
		/// </summary>
		CookieCollection

	}


	public class ResultModel
	{
		public bool Pass { get; set; }
		public string html { get; set; }
		public string Message { get; set; }
		public bool Stop { get; set; }
		public bool ReLogin { get; set; }

	}


	public enum RequestType
	{
		Html,
		Json,
		Bytes
	}

	public enum RequestMethod
	{
		GET,
		POST
	}


	public enum ContentType
	{
		Form,
		Json,
		Text

	}

}
